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  9. Carrier XtendFRESH Manual

Carrier XtendFRESH Manual

Cauon: Check that the unit circuit breaker and start-
stop switch are in the OFF (“0”) posion before con-
necng to any electrical power source.
1. Check power source for proper voltage.
2. Connect the refrigeraon unit power plug and turn
the main power ON.
3. Turn the refrigeraon unit circuit breaker ON (“1”).
4. Start the refrigeraon unit by turning the start stop
(ST) to ON (posion (“1”).
Notes: Turn the start-stop (ST) switch OFF (posion “0”)
to stop the unit, also turn the unit circuit breaker OFF.
Recommend the latest operaonal soware be installed
in the unit prior to troubleshoong.
Potenal hazardous atmosphere and low oxygen levels
inside the container, venlate before entering. Stay away
from doors while venng.
Refer to T-366 XtendFRESH Manual for a complete list
Operation of XtendFRESHTM
Starng the Refrigeraon Unit
Once the refrigeraon unit is oper-
ang, XtendFRESH operaon is
available through the system key
pad located on the right side of the
unit and the display module will
show state.
Setup XtendFRESH Operaon
and View CO2 and O2 Setpoints
View XtendFRESH CO2 and O2
Values Inside Container
Other opons available under Cd 43:
The XtendFRESH™ atmosphere control system is a
modular opon that oers enhanced funconality
to help slow the ripening process of perishable
cargo by removing ethylene and simultaneously
controlling CO2 and O2 levels in mulple combina-
ons. This enables the fresh transport of perisha-
bles on longer voyages. The system’s ability to
control the container atmosphere is performed
with the use of a CO2 and ethylene scrubber. In
this arcle, we will review the key features and
operaon of the system.
Operation of Keypad / Display
1. Press the “CODE SELECT” key on the key pad.
2. Press the “UP” or “DOWN” arrow keys unl “Cd 43”
is in the le display, then press “ENTER”.
3. Press the “UP” or “DOWN” arrow keys to access the
“FrESh” mode, then press “ENTER” to access sub
menu parameters.
4. With “CO2SP” in the le display, use the “UP” or
“DOWN” arrow keys to select the CO2 setpoint.
Then, press “ENTER”.
5. With “O2 SP” in the le display, use the “UP” or
“DOWN” arrow keys to select the O2 setpoint. Then,
press “ENTER”.
“OFF” mode will disable all XtendFRESH operaons. The
XtendFRESH vents will be closed and the scrubber will re-
main o. This will be the default mode anyme a frozen
mode of operaon is selected. Whenever a frozen setpoint
is selected, the current XtendFRESH seng will be saved.
“tEST” mode allows the operator to test system opera-
on of the mechanical components.
1. Press the “CODE SELECT” key on the key pad.
2. Press the “UP” or “DOWN” arrow keys unl “Cd 44” is
in the le display, then press “ENTER”. Code 44 allows
the user to view the CO2 and O2 concentraon values.
3. Press the “DOWN” arrow key to toggle between the
dierent values available in this sub menu.
CO2 Setpoint
CO2 %
O2 Setpoint
O2 %
O2 Voltage
XtendFRESH™
62-12065
Global Technical Support: 800-668-6283
XtendFRESH™
Operators Guide
AL07 MANUAL FRESH AIR VENT (FAV) OPEN
Cause For units equipped with XtendFRESH and a Vent Posion Sensor, the controller will monitor the manual fresh air opening at a pre-determined
me. If during this me the fresh air vent is open and XtendFRESH is acve, an alarm will be generated. If alarm is acve, the controller monitors
the manual fresh air once per hour. Upon clearing the alarm, the controller goes back to monitoring at the pre-determined me.
Component Vent Posion Sensor (VPS)
Troubleshoong Manually reposion vent to 0% and conrm using Cd45. If Cd45 is not reading 0%, perform a calibraon of the panel.
If unable to obtain zero reading, replace defecve VPS.
If unit is loaded, ensure vent is closed. Note and replace VPS on next PTI. The alarm will not aect the XtendFRESH system from operang.
AL09 O2 SENSOR FAILURE
Cause Triggered anyme the O2 sensor reading is outside of the normal operaon range, aer an inial signal was detected.
Component O2 Sensor, O2 Amplier, Sensor Switch Module (if equipped)
Troubleshoong Check Cd44 and scroll down to 02V. The O2 sensor output will be displayed in millivolts (130mV to 4100mV).
Switch equipped: If voltage is not present at Cd44 and a sensor switch module is installed, check for O2 voltage on black wire connected to the
sensor switch module, connecng ground of meter to TP9. If the voltage is in the 130mV to 4.1V range, directly wire black wire to KD04. This
may cause an AL07 depending on O2 reading but XtendFRESH will operate normally. If no voltage on black wire, proceed to next step.
Check wiring (refer to schemac), and correct if found mis-wired.
If O2 sensor is available, remove upper fresh air panel and evaporator motor and replace sensor. If aer replacing sensor AL09 connues, replace
amplier.
If parts are not available, turn XtendFRESH opon o (Cd43) and open the Manual Fresh Air Vent.
AL10 CO2 SENSOR FAILURE
Cause Triggered anyme the CO2 sensor reading is outside of the normal operaon range, aer an inial signal was detected.
Component CO2 Sensor
Troubleshoong Check the voltage at MC5 to ground pin on TP9. (1 - 4.7 vdc)
Check wiring (refer to schemac), and correct if found mis-wired.
If part is available, remove upper fresh air panel and evaporator motor; replace sensor.
If no part is available, take no acon and service at next PTI. XtendFRESH will connuously run the scrubber. O2 level will be controlled with the
opening and closing of the fresh air vents as required.
AL29 LOSS OF ATMOSPHERIC CONTROL
Cause Triggered whenever the CO2 level is above its upper limit by 1% for 60 minutes. Or, when O2 level is greater than 1% below its set point for longer
than 5 minutes aer the unit has been in range. The alarm is triggered o when the levels return to within the normal range.
Setup Run Cd43 test mode for troubleshoong the below components. If test mode mes out, you must restart the mode prior to the connuaon of
tesng.
Troubleshoong If components do not energize, check FX1 and FX2 for power (460 VAC). If fuse is open, check heater connuity (XHT1 to ground). Must be
greater than 1 mega ohm. If less than 1, disconnect the heater at XHT1 and XHT2. Replace fuse. Unit will control on fresh air solenoids.
Component Solenoid Air Vents - Visually inspect to see if the Solenoid Valves are opening air vents.
Troubleshoong If vents open, troubleshoot the next component. If vents do not open, connue with troubleshoong below.
Check FX4 fuse for power (~20 volts dc).
If fuse is open, check wiring and or replace solenoid if part is available.
If no part is available, open manual fresh air vent.
Component XtendFRESH Fan(s) / XtendFRESH Scrubber Motor - Visually inspect to see if the XtendFRESH Fan(s) are running (air blowing on le, intake on
right), check current draw of motor at the XST1 (~ 40 to 200 milliamps / contactor load side). Troubleshoot the non-operang component.
Troubleshoong If both are running, proceed to next component.
Verify XS contactor is pulling in. If not, check FX6 fuse for power (24 VAC). If not, check power at controller KB4.
Check FX3 fuse for power (~20 vdc). If no power, replace fuse. If fuse opens a second me, take no further acon. O2 level will be controlled
with the opening and closing of the fresh air vents.
If part is available, replace either fan or scrubber motor. Fan is replaceable from the front on a loaded unit; Scrubber motor is not.
If no part is available or accessible, take no acon and service at next PTI. O2 level will be controlled with the opening and closing of the fresh air
vents.
Component Heater
Troubleshoong Verify XH contactor is pulling in. If not, Check FX6 for power (24 VAC). If open ohm contactors XHA1 and XSA1 to ground. Replace (12 Amp)
contactor. If contactor is pulling, power unit o and check heater resistance from XH1to XH2 (450 to 500 ohms). If heater is outside of the range,
disconnect heater at XHT1 and XHT2 and replace at next PTI. Unit will control on fresh air solenoids.
AL62 O2 OUT OF RANGE
Cause This is a nocaon alarm and does not pose a risk to fresh produce. AL62 is triggered when there is an indicaon that the O2 level is rising aer
reaching its setpoint (+ 1%). If O2 level exceeds 4% above setpoint, the alarm is acvated. The alarm does not acvate if the unit was pre-tripped or
trip started between last reaching its O2 setpoint and exceeding the plus 4%, or if power has been turned o for eight hours. The alarm is deac-
vated if O2 drops below setpoint (+ 1%) or if a pre-trip or trip start is performed.
Component Scrubber Failure
Troubleshoong Refer to AL29 Scrubber component above.
Component XtendFRESH Solenoid Valves
Troubleshoong Refer to AL29 Solenoid Air Vent component above.
Component Container Air Tightness
Troubleshoong Seal container where possible (access panels, rear doors, mounng hardware, etc).
AL96 SCRUBBER ROTATION FAILURE - OPTIONAL FEATURE
Cause Feedback from the Scrubber Motor to the controller not detected
Component Scrubber Motor
Troubleshoong Run Test Mode and verify scrubber bed is turning. If back panel cannot be removed to check verify the scrubber amperage consumpon, read at
XS contactor wire XSL1. If between 40 and 200mA motor rotang properly. If NO current detected check and replace FX3. If current spiking to
350mAps for 2 seconds then dropping to 90mAmps the scrubber motor is located. If scrubber motor is locked further inspecon of the scrubber
bed is required. Unit will control CO2 with the fresh air solenoid when this alarm occurs if scrubber inaccessible.
Component Ground Interface Module (GIM)
Troubleshoong Once it has been veried that the scrubber motor is rotang check the wiring connecons to the GIM module. If all wires secured properly re-
place the GIM module if one is available. If not the unit will control CO2 using the fresh air solenoids.
XtendFRESH Troubleshoong
The XtendFRESHTM Controlled Atmosphere opon alarms are AL07, AL09, AL10, AL29, AL62 and AL96.

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